For North Carolinians, spikes in health insurance premiums rank 4th highest nationwide in the individual market.  The graphs below compare pre-Obamacare rates to post-Obamacare rates for male and female individual policyholders.  Average premiums for three age groups (27,40,64) were calculated as such by the Manhattan Institute:

 As with our past work, we calculated an average of the five least-expensive plans in every county in a state pre-Obamacare, adjusted to take into account those with pre-existing conditions and other health problems. We then did the same calculation with the five least-expensive plans in every county in the Obamacare exchanges. We then used these county-based numbers to come up with a population-weighted state average pre- and post-Obamacare. 

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